Exam (elaborations)
HLTH 645 Exam 1
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- HLTH 645 Exam 2
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- HLTH 645 Exam 2
Exam of 9 pages for the course HLTH 645 Exam 2 at HLTH 645 Exam 2 (HLTH 645 Exam 1)
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HLTH 645 Exam 1The body creates energy from the food that is consumed. - ANS-False; The body
cannot create energy. Through the process called bioenergetics, the body transforms
the energy that is contained in food to forms that are usable in the body.
The scientific unit of measure of energy is the calorie. - ANS-False; The unit of measure
for energy in SI units is the joule, which is equal to 0.24 calories. Although the term
calorie (lowercase c) is widely used in nonscientific writing in the United States, it is
technically incorrect.
A person's Resting Metabolic Rate (RMR) can change in response to a variety of
factors, such as age, food intake, and environmental temperature. - ANS-True
Physical activity is responsible for the largest amount of energy expended during the
day for the average adult in the United States. - ANS-False; Resting metabolism makes
up approximately 70 percent of the day's energy expenditure in a sedentary adult,
where physical activity comprises only ~ 20 percent of the total energy expenditure.
The energy source used by all cells in the body is adenosine triphosphate (ATP) -
ANS-True
An athlete's diet is a modification of the general nutrition guidelines made for healthy
adults. - ANS-True
After a healthy diet plan is developed, an athlete can use it every day with little need for
modifications. - ANS-False; The demands of training vary over the course of a year, and
the nutrition plan will also need to change to match training.
In the United States, dietary supplements are regulated in the same way as
over-the-counter medications. - ANS-False; Dietary supplements are loosely regulated
under the Dietary Supplement Health and Education Act. By law, the active ingredients
in over-the-counter medications must be standardized, which is not the case for dietary
supplements.
The scientific aspect of sports nutrition is developing very quickly, and quantum leaps
are being made in knowledge of sports nutrition. - ANS-False; Scientific knowledge of
sports nutrition is increasing, but its progress is slow, as is the case for most
science-based disciplines.
, To legally use the title of sports nutritionist in the United States, a person must have a
bachelor's degree in nutrition. - ANS-False: Nutritionist is a broad term, and anyone in
the United States can claim to be a sports nutritionist.
The direct source of energy for force production by muscle is ATP. - ANS-True
Creatine supplements result in immediate increases in strength, speed, and power. -
ANS-False; Creatine supplementation may be effective for some strength athletes
because it allows them to train harder, such as completing more weight-lifting
repetitions. Over time, this increase in the training stimulus allows the athlete to
potentially become stronger, faster, or more powerful.
Lactate is a metabolic waste product that causes fatigue. - ANS-False; Lactate is an
important metabolic product that can be used by other cells as a source of energy; the
liver can use lactate to make glucose. The accumulation of lactate molecules does not
cause fatigue; one likely cause is the metabolic acidosis that is associated with
high-intensity exercise when glycolysis is used at a high rate.
The aerobic energy system is not active during high-intensity anaerobic exercise. -
ANS-False; All energy systems are active at all times. Aerobic metabolism may not be
the predominant energy system during high-intensity exercise described as anaerobic; it
will increase in activity to replace creatine phosphate and oxidize lactate after anaerobic
exercise.
At rest and during low levels of physical activity, fat is the preferred source of fuel for the
aerobic energy system. - ANS-True
The strength of any scientific recommendation depends on the quality of the research
conducted. - ANS-True
The most important carriers for electrons in oxidation-reduction reactions are
_________. - ANS-NAD and FAD
Which macronutrient has the greatest effect on the thermic effect of food? -
ANS-Proteins
Based on dietary intake only, whom would you expect to have the lowest amount of
muscle creatine? - ANS-Vegetarians
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